More than 400 people have been injured in Russia by an explosion caused by what seems to have been a meteor.
Eyewitnesses describe seeing a fireball curving through the clear sky, and an extremely intense light as it passed overhead.
It seems to have been a meteor, and left a white condensationtrail behind it. A couple of minutes later there was a loud bang.
The shock wave from the blast blew out windows across the region round Chelyabinsk in the Ural mountains.
People who'd rushed to look out and see what was happening were injured by flying glass.
Everyone went outside to check their neighbours were OK, and the mobile phone network collapsed, briefly overwhelmed by the volume of calls.
Eyewitnesses: saksi mata
intense: terang dan sangat kuat
condensation trail: garis di angkasa yang terbentuk dari uap air dan terlihat mengikuti suatu benda
shock wave: gelombang tekanan kuat yang disebabkan terjadinya ledakan
blew out: memecahkan, menghancurkan
overwhelmed by: tidak bisa mengatasi
the volume of: sejumlah besar